## Mathematics Subject Classification – MSC2010

Directed graphs (digraphs), tournaments 9294

Graphs and linear algebra (matrices, eigenvalues, etc.) 9673

Isomorphism problems (reconstruction conjecture, etc.) and homomorphisms (subgraph embedding, etc.) 2866

Graph representations (geometric and intersection representations, etc.) [For graph drawing, see also 68R10] 2330

Graph operations (line graphs, products, etc.) 2246

Graph labelling (graceful graphs, bandwidth, etc.) 4452

Molecular structure (graph-theoretic methods, methods of differential topology, etc.) 2775